Rhine and Davis left Laos for the United States the first of April, 1960. They returned to Southwest Texas State College and earned their pre-med degrees. In March 1962, Bill Moyers, Associate Director of the Peace Corps, contacted Rhine and Davis and asked them to join the Peace Corps. Rhine and Davis declined the offer, but they did give him information about their time in Laos and some advice on working with people of a different country and culture.

         After they graduated, Rhine and Davis did not continue to pursue their medical careers, but they helped people in other ways through their government jobs both in South Vietnam and in America. Rhine and Davis were recruited by the State Department to work with the Agency for International Development (AID) program. They went to separate villages in South Vietnam. The goal of their work was to help villagers learn to grow various crops and use new farm equipment so they could produce for themselves. They worked in South Vietnam from 1962 to 1965.

         In 1966, Rhine and Davis began working for the Office of Economic Opportunity. They worked with locally elected officials, business people, and the poor of specific areas to determine the cause of poverty in that area, in order to design a way to reduce poverty in that area. Later, Rhine worked with the Department of Health and Human Services, and Davis worked for the Environmental Protection Agency. Rhine retired from this job in 1982.